RCM2 family
RCM2_a302_imuAccYHgMonChlPerm
Safety restraint system issue - Service required
What does the RCM2_a302_imuAccYHgMonChlPerm alert mean?
High g Lateral Acceleration (Ay-Hg) - Permanent Channel Monitoring
What you'll see in your Tesla
- Safety restraint system issue - Service required
- Event data recording may be limited
What triggers it
There is an issue with the inertial measurement unit.
When it clears
Cannot be cleared. The restraint control module needs to be replaced.
Potential impact
The Safety Restraint System may not perform as designed.
Affected models
Cybertruck
Model 3 2017-2023
Model 3 2024+
Model S 2021+
Model X 2021+
Model Y
Model Y 2025+
Track your Tesla's alerts automatically
Alerts like this reach MyTeslaMate through your car's Tesla telemetry API. MyTeslaMate logs every alert your Tesla reports and turns it into readable history and real-time notifications — hosted TeslaMate with no server to run.